Bump django-geonode-mapstore-client from 1.4.2 to 1.4.3

Bumps [django-geonode-mapstore-client](https://github.com/GeoNode/geonode-mapstore-client) from 1.4.2 to 1.4.3.
- [Release notes](https://github.com/GeoNode/geonode-mapstore-client/releases)
- [Changelog](https://github.com/GeoNode/geonode-mapstore-client/blob/master/CHANGELOG.md)
- [Commits](GeoNode/geonode-mapstore-client@v1.4.2...1.4.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements.txt

@@ -72,7 +72,7 @@ geonode-oauth-toolkit==1.1.4.6
 # GeoNode org maintained apps.
 django-geoexplorer==4.0.43
 django-mapstore-adapter==1.0.8
-django-geonode-mapstore-client==1.4.2
+django-geonode-mapstore-client==1.4.3
 django-geonode-client==1.0.9
 geonode-user-messages==0.1.14
 geonode-avatar==2.1.8